ASoC: adsp: Keep ADSP2 memory powered off when not in use
Turn off the ADSP memory when we aren't using it, saving a small amount of
power.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/codecs/wm_adsp.c b/sound/soc/codecs/wm_adsp.c
index a41742d..3a8d75b 100644
--- a/sound/soc/codecs/wm_adsp.c
+++ b/sound/soc/codecs/wm_adsp.c
@@ -629,6 +629,17 @@
{
int ret;
+ /*
+ * Disable the DSP memory by default when in reset for a small
+ * power saving.
+ */
+ ret = regmap_update_bits(adsp->regmap, adsp->base + ADSP2_CONTROL,
+ ADSP2_MEM_ENA, 0);
+ if (ret != 0) {
+ adsp_err(adsp, "Failed to clear memory retention: %d\n", ret);
+ return ret;
+ }
+
if (dvfs) {
adsp->dvfs = devm_regulator_get(adsp->dev, "DCVDD");
if (IS_ERR(adsp->dvfs)) {